双环己酮草酰二腙光度法测定铜已被广泛应用于合金中铜的测定,本文采用了样品分析和加标回收率实验对照,实验了分析条件的影响。结果表明,该方法应用于铝镁合金中铜的测定,回收率为96.3%～101.1%。方法简便快速、定量结果准确、重现性好,适合工厂快速分析的要求。 Spectrophotometric determination of copper with biscyclohexanone oxalyl hydrazone has been widely used in the determination of copper in the alloy. In this paper, sample analysis and spiked recovery experiments were used to control the influence of the analytical conditions. The results showed that the method was applied to the determination of copper in aluminum-magnesium alloy with the recovery of 96.3% ~ 101.1%. The method is simple and rapid, accurate quantitative results, good reproducibility, suitable for the rapid analysis of the factory requirements.